diff --git a/src/de/dhbwstuttgart/typeinference/unify/model/TypeParams.java b/src/de/dhbwstuttgart/typeinference/unify/model/TypeParams.java
index dc90847b..482155fc 100644
--- a/src/de/dhbwstuttgart/typeinference/unify/model/TypeParams.java
+++ b/src/de/dhbwstuttgart/typeinference/unify/model/TypeParams.java
@@ -98,9 +98,10 @@ public final class TypeParams implements Iterable<UnifyType>{
 	 */
 	public boolean occurs(PlaceholderType t) {
 		for(UnifyType p : typeParams)
-			if(p instanceof PlaceholderType)
+			if(p instanceof PlaceholderType) {//PL 2018-01-31 dangeling else Problem { ... } eingefuegt.
 				if(p.equals(t))
 					return true;
+			}
 			else
 				if(p.getTypeParams().occurs(t))
 					return true;